<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script src="https://unpkg.com/vue@next"></script>
    <div id="app">
        <todo-item>
            <template v-slot:header>
                <p>我是头部</p>
            </template>

            <template v-slot:default>
                <p>我是内容区域</p>
            </template>

            <template v-slot:footer>
                <p>我是尾部区域</p>
            </template>
        </todo-item>

    </div>
    <script>
        const vueOpt = {
            data(){
                return {

                }
            }
        }

        const app = Vue.createApp(vueOpt);

        app.component('todo-item', {
            data(){
                return {

                }
            },

            template: `
                <div class="container">
                    <header>
                        <slot name="header"></slot>
                    </header>

                    <main>
                        <slot></slot>
                    </main>

                    <footer>
                        <slot name="footer"></slot>
                    </footer>
                </div>
            `
        })
        app.mount('#app');
    </script>
</body>
</html>